Primitives

Feature

A named piece of a class, species or feat that a character gains. It carries its rules through channels: resource pools, actions, roll modifiers, triggers and so on.

In the engine FeatureDefinition (src/lib/types/character-feature.ts)

Trigger

Something that happens by itself when an event occurs: the start of your turn, scoring a critical hit, using a particular action.

In the engine FeatureTrigger (src/lib/types/feature-trigger.ts)

Used by Tactical Shift, Remarkable Athlete, Heroic Warrior, Survivor

Capability

A named ability the engine checks for directly when it resolves an attack or a choice.

In the engine capabilities (src/lib/types/character-feature.ts)

Used by Tactical Master

Proficiencies

The armour, weapons and skills a class makes you proficient in, including skills you choose from a list.

In the engine Advancement 'trait' (src/lib/types/advancement.ts)

Used by Proficiencies

Feature grant

Gives one or more features when the character reaches a level.

In the engine Advancement 'item-grant' (src/lib/types/advancement.ts)

Used by Fighting Style, Second Wind, Weapon Mastery, Action Surge, Tactical Mind, Extra Attack, Tactical Shift, Indomitable, Tactical Master, Two Extra Attacks, Studied Attacks, Three Extra Attacks, Improved Critical, Remarkable Athlete, Additional Fighting Style, Heroic Warrior, Superior Critical, Survivor

Ability Score Improvement

Raise your ability scores by 2 points in total, or take a feat instead.

In the engine Advancement 'ability-score-improvement' (src/lib/types/advancement.ts)

Used by Ability Score Improvement, Ability Score Improvement, Ability Score Improvement, Ability Score Improvement, Ability Score Improvement, Ability Score Improvement

Feat choice

Asks the player to pick a feat, sometimes from one category only, like a Fighting Style or an Epic Boon.

In the engine Advancement 'feat-choice' (src/lib/types/advancement.ts)

Used by Fighting Style, Epic Boon, Additional Fighting Style

Subclass choice

The level where the player picks a subclass. The subclass then gives its own features at later levels.

In the engine Advancement 'subclass' (src/lib/types/advancement.ts)

Used by Fighter Subclass

Healing action

An action that restores hit points. The amount is written as a value, like 1d10 plus your level.

In the engine ActivityType 'heal' (src/lib/types/activity.ts)

Used by Second Wind

Utility action

An action with no attack roll and no saving throw, used for things like gaining an extra action.

In the engine ActivityType 'utility' (src/lib/types/activity.ts)

Used by Action Surge

Activation cost

What using an action takes from your turn: an action, a bonus action, a reaction, or nothing at all.

In the engine ActivationType (src/lib/types/activity.ts)

Used by Second Wind, Action Surge

Extra action

Gives you more to spend this turn, such as one additional action.

In the engine grantsEconomy (src/lib/types/activity.ts)

Used by Action Surge

Healing

Restores hit points.

In the engine trigger effect 'heal' (src/lib/types/feature-trigger.ts)

Used by Survivor

Free movement

Lets you move right away, often up to half your speed, without provoking opportunity attacks.

In the engine trigger effect 'grant-movement' (src/lib/types/feature-trigger.ts)

Used by Tactical Shift, Remarkable Athlete

Heroic Inspiration

Gives Heroic Inspiration, which you can spend to reroll a die.

In the engine trigger effect 'grant-luck' (src/lib/types/feature-trigger.ts)

Used by Heroic Warrior

Resource pool

A counter of uses with a maximum. It refills on a short rest, a long rest, or not at all, and actions or roll modifiers can spend from it.

In the engine ResourceDefinition (src/lib/types/resource.ts)

Used by Second Wind, Action Surge, Indomitable

Cost in uses

What an action spends each time it is used, such as one use from a resource pool, and how often it can be used.

In the engine ActivityConsumption (src/lib/types/activity.ts)

Used by Second Wind, Action Surge

Roll modifier

Changes a d20 roll in a given situation, for example on checks or saving throws. It can apply by itself or be offered to the player, and it can cost a use from a pool.

In the engine RollModifierGrant (src/lib/types/roll.ts)

Used by Tactical Mind, Indomitable, Studied Attacks, Remarkable Athlete

Add a die

Adds a die to the roll, like the 1d10 from Tactical Mind.

In the engine RollAdjustment 'add-die' (src/lib/types/roll.ts)

Used by Tactical Mind

Reroll

Rolls the d20 again and uses the new result, sometimes with a bonus added.

In the engine RollAdjustment 'reroll' (src/lib/types/roll.ts)

Used by Indomitable

Advantage

Roll two d20 and keep the higher one.

In the engine roll adjustment 'advantage' (src/lib/types/roll.ts)

Used by Studied Attacks, Remarkable Athlete

Combat numbers

Changes to how the character fights: attacks per Attack action, the range that counts as a critical hit, how many weapon masteries you can use.

In the engine combatProfile (src/lib/types/character-feature.ts)

Used by Weapon Mastery, Extra Attack, Two Extra Attacks, Three Extra Attacks, Improved Critical, Superior Critical

Weapon mastery

A special property of a weapon, like Cleave, Graze, Push or Topple, that a trained character can use when attacking with it.

In the engine WeaponMastery (src/lib/types/weapon.ts)

Used by Weapon Mastery

Value

How the engine writes a number: dice, a flat number, an ability modifier, your level, or a value that grows with level. Pieces add up.

In the engine ValueExpr (src/lib/types/value-expr.ts)

Used by Second Wind

Condition

A test checked before something applies, such as "you missed this target before" or "you are bloodied".

In the engine Condition (src/lib/types/condition.ts)

Used by Studied Attacks, Survivor